From mboxrd@z Thu Jan  1 00:00:00 1970
From: "Paul Marks" <paul@pmarks.net>
Subject: When should kfree_skb be used?
Date: Thu, 8 May 2008 21:49:27 -0700
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Hi, I'm trying to make sense of the ipip6_rcv function here:

http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=blob;f=net/ipv6/sit.c;hb=HEAD#l564

Specifically, why is kfree_skb called when pskb_may_pull(...) returns
true, but not called when it returns false?  Is there something in the
code path which increments the skb's reference count that I'm not
noticing?